The original engine
installation on all model Teals was a 150 hp Lycoming O-320-A3B four cylinder engine,
driving a two-bladed constant speed propellor. Due to the thick wing
section and other parasite drag, the Teal will never be a speed queen. However,
a few Teals have already had a more powerful engine installed.
Engine and engine pylon on Teal C-GDQC (s/n 22)
Photo: © Ted Dirstein
The first Teal to have a more powerful engine installed
was probably Teal C-GDQC (s/n 22). Owner
Tom Martindale installed a 180 hp Lycoming O-360 engine in the late
1980ies, on a new engine pylon originally designed by Dave Thurston for
the TSC-2 Patchen Explorer - a surveillance landplane version of the Teal.
The Teals currently under refurbishment at Lake
Central Air Services in Canada will have a choice between three
different Lycoming engine models.
Lycoming
Model |
O-320-A3B |
O-320-B3B |
O-360-A1H6 |
Type
Certificate No: |
E-274 |
E-274 |
E-286 |
Power |
150
hp @ 2700 rpm |
160
hp @ 2700 rpm |
180
hp @ 2700 rpm |
Cylinders |
4 |
4 |
4 |
Displacement |
319.8
cu in |
319.8
cu in |
361
cu in |
Bore |
5.125
in |
5.125
in |
5.125
in |
Stroke |
3.875
in |
3.875
in |
4.375
in |
Compression
ratio |
7.00:1 |
8.50:1 |
8.50:1 |
Weight |
244
lbs |
250
lbs |
298
lbs |
Ignition |
TCM
S4LN21; S4LN20 Dual Magnetos |
TCM
S4LN21; S4LN20 Dual Magnetos |
Slick4230;
4202 Dual Magnetos |
Timing |
25º
BTC |
25º
BTC |
25º
BTC |
Carburetor |
Marvel-Schebler
MA-4SPA |
PAC
HA-6 |
PAC
HA-6 |
Fuel
Grade (min.) |
80/87LL |
100/100LL |
100/100LL |
Oils
Sump Cap. |
8
qts |
8
qts |
8
qts |
Propeller
Shaft |
SAE
AS-127 Type 2 Mod. |
SAE
AS-127 Type 2 Mod. |
SAE
AS-127 Type 2 Mod. |
Teal
Serial Nos: |
All |
19 |
34,
36 |